.venv/bin/planemo serve
planemo couldn't find a target test-data directory, you should likely create a test-data directory or pass an explicit path using --test_data.
git --git-dir /home/hocine/.planemo/gx_repo fetch >/dev/null 2>&1
cd /tmp/tmpXOoWqL;git clone  '/home/hocine/.planemo/gx_repo' 'galaxy-dev';cd galaxy-dev;type virtualenv >/dev/null 2>&1 && virtualenv .venv;[ -e .venv ] && . .venv/bin/activate
Cloning into 'galaxy-dev'...
done.
Checking connectivity... done
Using base prefix '/usr'
New python executable in .venv/bin/python3
Also creating executable in .venv/bin/python
Installing setuptools, pip, wheel...done.
Starting galaxy with command [/tmp/tmpXOoWqL/galaxy-dev/run.sh --server-name 'planemo52484' --reload]
Activating virtualenv at /tmp/tmpXOoWqL/galaxy-dev/.venv
Traceback (most recent call last):
  File "./scripts/check_python.py", line 17, in check_python
    assert sys.version_info[:2] >= ( 2, 6 ) and sys.version_info[:2] <= ( 2, 7 )
AssertionError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./scripts/check_python.py", line 25, in <module>
    check_python()
  File "./scripts/check_python.py", line 19, in check_python
    print >>sys.stderr, msg
TypeError: unsupported operand type(s) for >>: 'builtin_function_or_method' and '_io.TextIOWrapper'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./scripts/check_python.py", line 26, in <module>
    except StandardError:
NameError: name 'StandardError' is not defined